UUID Regex

A UUID (versions 1 to 8) in its usual 8-4-4-4-12 hex form, any case.

/^[0-9a-f]{8}-[0-9a-f]{4}-[1-8][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i

Piece by piece

1. ^the start of the text
2. [0-9a-f]{8}one of 0–9, a–f, repeated exactly 8 times, as many as possible
3. -the character “-”
4. [0-9a-f]{4}one of 0–9, a–f, repeated exactly 4 times, as many as possible
5. -the character “-”
6. [1-8]one of 1–8
7. [0-9a-f]{3}one of 0–9, a–f, repeated exactly 3 times, as many as possible
8. -the character “-”
9. [89ab]one of “8”, “9”, “a”, “b”
10. [0-9a-f]{3}one of 0–9, a–f, repeated exactly 3 times, as many as possible
11. -the character “-”
12. [0-9a-f]{12}one of 0–9, a–f, repeated exactly 12 times, as many as possible
13. $the end of the text

Examples

• The all-zero "nil" UUID doesn't match, as its version digit is 0.

Other common patterns

• Email Address Regex
• URL Regex
• IPv4 Address Regex
• Date (YYYY-MM-DD) Regex
• Hex Colour Regex
• International Phone Number Regex
• 24-Hour Time Regex
• URL Slug Regex
• Strong Password Regex
• US ZIP Code Regex

Test any regular expression →